我最终想要做什么?
检查新闻文章 JSON 中两个或多个国家/地区的国家/地区关键字,并返回这些文章。
这有点复杂(至少对我来说),所以请耐心等待。
我目前正在从 API 接收新闻文章 JSON。我成功地使用 Underscore _.map 来获取每个对象的描述键值。我将针对关键字迭代这些值:
let combinedBing = this.bingWorldJSON.value.concat(this.bingPoliticsJSON.value);
let bingArray = _.map(combinedBing, 'description');
我正在检查另一个(动态)数组(称为事件)中可能有的关键字的描述。我为此使用 .map 方法。示例:
let event = ["United States", "Russia"]
let result = event.map(function(word){
return newArray.filter(function(article){
// console.log(article);
return article.toString().indexOf(word) > -1;
});
});
这将返回一个二维数组,如下所示:
[Array(4), Array(0)]
0:Array(4)
0:"No sign probes into Russia, Trump campaign will die down"
1:"Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron"
2:"Senate Russia investigation to add 2 staffers"
3:"Former Trump adviser Flynn likely broke law with Russia trip: lawmakers"
length:4
__proto__:Array(0)
1:Array(0)
length:2
__proto__: Array(0)
但是,我不想只使用事件数组中的单词,因为它非常有限。为什么?因为返回的新闻文章并不总是使用严格的国家/地区名称,但通常具有等效的语义(即“U.S.”而不是“United States”,或者“Russia's”而不是“Russia”)。
因为我的“事件”数组是动态创建的(并且我无法更改该数组中的严格国家/地区名称),所以我将等效关键字的硬编码数组推送到另一个数组(如果该国家/地区存在于“事件”中) )。因此,如果我的“事件”有
["United States, "Russia"]
我还将创建一个二维数组,如下所示:
[["United States", "U.S.", "US", "America"], ["Russia", "Russian", "Putin", "Moscow"]]
我没有使用 event.map (如上面成功完成的那样),而是尝试找出如何将每个数组(在二维数组中)的关键字与我返回的文章进行映射。不仅如此,还返回包含来自两个或多个国家/地区的关键字的文章。例如,如果一篇文章包含关键字“美国”和“莫斯科”,它将返回该文章以及包含这两个国家的关键字组合的任何其他文章。
我知道这可能看起来有点复杂。但由于我使用的这些 API 中没有关键字搜索,因此我尝试手动执行此操作。
非常感谢您耐心阅读本文!感谢您提供有关如何解决此问题的任何帮助或想法。
最佳答案
要仅获取那些至少提到两个不同国家(或其替代词之一)的文章,那么:
const bingArray = [
"No sign probes into Russia, Trump campaign will die down",
"Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron",
"Senate Russia investigation to add 2 staffers",
"Former Trump adviser Flynn likely broke law with Russia trip: lawmakers",
'Big meeting in Moscow tomorrow',
'Russia has U.S. ambassy closed',
'Did Putin influence the United States elections?',
];
const event = [["United States", "U.S.", "US", "America"],
["Russia", "Russian", "Putin", "Moscow"]];
const matches = bingArray.filter(
article => event.filter(
words => words.find(
word => article.includes(word)
)
).length > 1
);
console.log('articles mentioning at least 2 countries:');
console.log(matches);
如果您希望仅包含与事件的所有个条目匹配的文章,而不仅仅是2个,则使用every
:
const bingArray = [
"No sign probes into Russia, Trump campaign will die down",
"Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron",
"Senate Russia investigation to add 2 staffers",
"Former Trump adviser Flynn likely broke law with Russia trip: lawmakers",
'Big meeting in Moscow tomorrow',
'Russia has U.S. ambassy closed',
'Did Putin influence the United States elections?',
];
const event = [["United States", "U.S.", "US", "America"],
["Russia", "Russian", "Putin", "Moscow"]];
const matches = bingArray.filter(
article => event.every(
words => words.find(
word => article.includes(word)
)
)
);
console.log('articles mentioning all listed countries:');
console.log(matches);
关于javascript - 如何检查数组中的字符串是否包含二维数组中的两个或多个字符串?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43620580/